Precast concrete building construction



Sept. 28, 1937. A. J. BLAcKsfroNE PRECAST CONCRETE BUILDING CONSTRUCTIONz sheets-sheet 1 Filed Feb. l2, 1937 f' fa 2 Sheets-Sheet 2 'm wm.

I J l i HIL.

A. J. BLACKSTON E PREcAsT CONCRETE BUILDING CONSTRUCTION Filed Feb. 12,1937 sept. z8, 1937.

Patented Sept. 28, l1937 UNITED STATES PRECST CONCRETIgIIILDINGCONSTRUC- Abraham J. Blackstone, Chicago, lll.

Application February 12, 1937, Serial No. 125,474

7 Claims..

An object of this invention is to provide an improved buildingconstruction having a steel framework which is fabricated in the shopand wherein the exterior sections of the building are vpre-castconcrete, all for quick and easy assembly on the ground by unskilledlabor.

Another object is to provide a ready means for securing metal lath tothe steel framework.

These and other objects, as will hereinafter appear,` are accomplishedby this invention which is fully described in the followingspecification and shown in the accompanying drawings, in which- Figure 1is a partial perspective of a one-story house embodying the invention;

Figs. 2, 3, and 4 are enlarged partial sections on the lines 2-2, 3 3,and 4 4, respectively, of Fig. 1; and

Figs. 5, 6, and 'l are enlarged elevations of concrete building sectionsas viewed from the reverse side.

The embodiment illustrated comprises a building having a steel frameworkwith corner columns A, intermediate outside columns as B, resting uponsuitableA fittings or foundations (not shown) and connected byhorizontal beams C, D, E, F, etc., which are connected to the columns inany well known manner as by means of connecting angles (not shown) whichare riveted or bolted for rigid but quick assembly of the building inthe eld.

'I'he exterior of the building is made up of a series of pre-castconcrete sections as Ill, II, I2 which are suitably supported by thebeams. Thus the section I0 is vmade up of concrete or the r likesuitably reinforced with metal, and has an inwardly projecting rib I0nserving vas a ledge adapted to rest on the top flange of the beam C.This section overlaps the columns A and B, and is provided with a numberof studs or bolts Ill", I||, ete. (Fig. 7) at suitable intervals whichare preferably cast in vertical ribs III'i in the section and at thelower end are adaptedto pass through the upper flange of the beam C soas to maintain this l, section on the beam.

'I'he section I0 also has an upper horizontal rib Il)e with which thevertical ribs connect. A bolt I4 is cast into each end of the horizontalrib IIIa near its end, as shown in Figs. 3 and 'Land passes throughholes inthe end of a metal strap ,I5 which lies across the two flangesof the column B. 'Ihese bolts have nuts by means of which the sectionsmay be drawn up tightly against the column. The ends of adjacentsections, however, do not meet, and the'space therebetween is filled aswill later be described. A

The intermediate concrete section II may have a window, as I6, or windowframe cast therein -preferably of metal. This section preferably has topand bottom horizontal ribs I1, Il, respectively,

cast integral as well as connecting vertical ribs I9, 20. j

The rods Inh, (Fig. 7) serve several purposes. These rods extend throughthe vertical ribs Ind acting as reenforcing rods; the lower ends of therods serve to position the section onthe supporting beam C while theupper ends of these rods are preferably threaded to receive a screwthreaded eyelet or the like, not shown, which is used when the concretesection is being moved both during means of bolts I4 which are similarlto bolts I4 and are cast in these sections in the same way. 'I'he upperrend of the section II is provided with bolts 22, 23 which extend beyondthe upper surface of the section and serve the same purposes as theupper ends ofthe rodsrI Uh, Inc.

In a one-story building the upper portion may be finished by means ofsections as I2, each of kwhich has a lower rib 24 which has bolts UIh(similar to the bolts I4, |45) cast therein at each end for securingthis section to a column, as the co1- umn A, by means of ametal plate25. 'I'he lower rib 24 is provided with metal pipes 26, 21 which areadapted to register with the bolts 22, 23 so as to position one sectionwith respect to the other.

The upper section I2 is provided with a ledge |29 which rests upon thebeam E (Fig. 4) and has two or more rods 28 cast therein and extendingdown so as to pass through registering openings in the flange of thebeam E to position this section with respect to the beam.

The vertical space in iront of the column B (Fig. 3) is now iilled bymeans of a vertical corner ller strip 29 which has suitable metalreenforcing 29*l and has a seriesof bolts 30 cast therein and passingthrough suitable registering openings in the web of the column A havingnuts 3| by means of which the iiller strip can be drawn upl tightlyagainst the column. 'I'his filler strip overlaps the ends-of thesections I2, I2. A suitable cement or mortar 32 serves to ll the 'spacebetween the iiller strip and the column.

Similarly a vertical ller strip 33 is secured to each of theintermediate columns B along the side wall and is secured thereto bymeans of bolts 34.' In this form the center portion 33a of the llerstrip is preferably raised so as to extend between the ends ofthesections Ill, I0, and I I, l l. and I2. I 2. while as before the space35 between the ller strip and the column is lled with a suitablemgvrtar.

Thus itill be seen that a very simple and efilcient means is providedfor constructing and 5 erecting the frame work and side walls of abuilding. While the building shown'is only a onestory building, itwill-be understood that it may readily be carried up two, three or morestories, as desired. The sections as described are precast and arebrought on the lot where the building 20 be laid on the lower nange ofthe lbeams C and D. Rock wool 38 may be placed thereon to serve as aheat insulator. The space between the top of the rock wool and thebottom of the floor slab 36 serves as a dead air-space which also acts2ans a heat insulator.

The roof may be made up of a series of precast concrete roof slabs 39supported on the steel beams F. A- ilashing 40 of copper or the like isbrought down over the roof slab 39, and a 30 suitable covering 4I ofasphalt or the like is applied thereto so as to render the wholewaterproof.

A screen as of chicken wire 42 is stretched over the ribs as assembledand nailed to the ribs, and 36 a cork board or strip 43, or the like, isplaced over each rib to act as a heat insulator to prevent condensationof moisture on the inner walls opposite the ribs.

To support the plasterI may use ,horizontal columns by means of wires 45passing through a hole in the column and vertical channels and studdlng48 are secured to the horizontal channels by means of wires 41. Thestuddiug have straight wires 48 passing therethrough. Over these a wirelath 49 or the like, preferably having a paper backing, is placed withthe ends of the wires protruding therethrough. These ends are then bentover as shown to retain the lath on the studding. Ielaster 50 is put onthe lath in the usual way.

The space between the wire screen 42 and outside suriace of concretewall section is then illled with rock wool or the like 5I, while thevspace 52 between the screen 42 and the vertical concrete sections actsas a dead air space.

In Fig. 4 is shown another method of interior nishing in which rock lath53 is carried some distance in front of the cork strips 43 as by meansof wood strips or studding (not shown) so as t0 leave a space to be lledwith rock wool 5 I.

Thus it will be seen a very eilicient but inexpensive means ofinsulatin'L the walls, iloors,

and roof against heat and cold is attained and.

one which provides a very satisfactory wall iinish.

I claim: l. In a building construction, a steel framework comprisingcolumns and beams secured tol gether, wall beams lying adjacent theouter walls, pre-'cast wall sections adapted to lie outside said 70 wallbeams and having means for supporting the wall sections onthe wallbeams, certain of the channels 44 (Fig. 2) which are secured to the wallsections each having a main slab lying outside the plane of the beamsand having inwardly extending spaced horizontal' ribs certain of whichhave ledges adapted to rest on the beams, and vertical ribs connectingthe horizontal ribs and spaced inwardly from the ends.

2. In a building construction, a steel framework comprising columns andbeams secured together, wall beams lying adjacent the outer Walls,pre-cast wall sections adapted to lie outside said wall beams and havingmeans for supporting the wall sections on the wall beams, certain of thewall sections each having a main slab lying outside the plane of thebeams and having inwardly extending spaced horizontal ribs certain ofwhich have ledges adapted to rest on the beams, vertical ribs connectingthe horizontal ribs and spaced inwardlylfrom the ends, and rods at theupper and lower ends of said vertical ribs of a section for -positioningsaid section with respect to the building members above and below it.

3. In a building-construction, a steel framework comprising wall columnsand beams secured ltogether', wall beams lying adjacent the outer walls,pre-cast concrete wall sections having edge portions overlapping thewall columns, and means for securing Athese overlapping sections to thecolumns including a vertical ller strip overlapping the edge portions.

4. In a. building construction, a steel frame-v work comprising wallcolumns and beams secured together, wall beams lying adjacent the outerwalls, pre-cast concrete wall sections having edge portions overlappingthe wall columns, and means for Securing vthese overlapping ,sections tothe columns including a vertical ller strip overlapping the edgeportions, said ller strip having bolts extending through the columns.

5. In a building construction, a steel framework comprising wall columnsand upper and lower beams secured to. the columns, a lower precast wallsection having a slab lying outsidethe columns and beams with aninwardly extending rib resting on the lower beam, a similar upper wallsection resting on the upper beam, and an intermediate wall sectionresting on the lower section and guided by the upper section.

6. In a building construction, a steel framework comprising vwallcolumns and upper and lower beams secured t0 the columns, a lower pre-'cast wall section having a slab lying outside the columns and beamswith an inwardly extending rib resting on the lower beam, a similarupper wall section resting on the upper beam, and an intermediate wallsection resting on the lower section and guided by the upper section,each section havf ing. a lip overhanging the section beneath.

7. In a building construction, a steel frame-M" work comprising wallcolumns and upper and lower beams secured to the columns, a lowerprecast wall section having a, slab lying outside the columns and beamswith an inwardly extending rib resting on the lower beam, a similarupper wall section resting on the upper beam, an intermediate wallsection resting on the lower section and guided by the upper section,sections at the same level on opposite sides of the columns having studsextending inwardly adjacent the column, and means yieldingly connectingthe studs and column.

' ABRAHAM J. BLACKSTONE.

